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Date: Sat, 15 Oct 2011 00:28:15 +0200
Message-ID: <CAFLxGvxgDQDzgWHZxS5m+9m84dsONEdmmmZhpsvVfRUH5CYTFQ@mail.gmail.com>
Subject: Re: [RFC] fixing the UML failure root cause
From: richard -rw- weinberger <richard.weinberger@gmail.com>
To: Andrew Lutomirski <luto@mit.edu>
Cc: Ingo Molnar <mingo@elte.hu>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Adrian Bunk <bunk@stusta.de>, "H. Peter Anvin" <hpa@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        x86@kernel.org, linux-kernel@vger.kernel.org
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On Fri, Oct 14, 2011 at 10:17 PM, Andrew Lutomirski <luto@mit.edu> wrote:
> On Fri, Oct 14, 2011 at 12:53 PM, richard -rw- weinberger
> <richard.weinberger@gmail.com> wrote:
>> On Tue, Oct 11, 2011 at 7:24 PM, Andrew Lutomirski <luto@mit.edu> wrote:
>>> What do you think of this approach?  If it seems good, I'll finish the
>>> patch and submit it.
>>>
>>> With this patch applied, UML appears to work, but it fills the log with
>>> exploit attempt warnings.  Any ideas on what to do about that?
>>>
>>
>> I can confirm that this patch works.
>> And I really like vsyscall=emulate because with that UML can trap vsyscalls. :-)
>
> Are you sure you don't mean vsyscall=native?  I suspect that UML can't
> actually trap vsyscalls in emulate mode right now, although that ought
> to be fixable.
>

§/%)"&!, you are so right!
I missed that vsyscall=native is the default setting now.
Sorry for the confusion.

-- 
Thanks,
//richard